But you shall receive power when the Holy Spirit has come upon you; and you shall be witnesses to Me in Jerusalem, and in all Judea and Samaria, and to the end of the earth.” Acts 1:8

“You are My witnesses,” says the Lord, “And My servant whom I have chosen, That you may know and believe Me, And understand that I am He. Before Me there was no God formed, Nor shall there be after Me. I, even I, am the Lord, And besides Me there is no saviour. I have declared and saved, I have proclaimed, And there was no foreign god among you; Therefore you are My witnesses,” Says the Lord, “that I am God. Isaiah 43:10-12